St. Lawrence County, New York Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
St. Lawrence County, NY Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around averageLess healthy than 77% of counties in New York
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D
Income Well below averageAmong the 5 least wealthy counties in New York
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D
Education Well below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | St. Lawrence County | New York Avg | U.S. Average |
|---|---|---|---|
| Population | 100,889 | 19,748,855 | 337,468,954 |
| Population density (per sq mi) | 35.8 | 362.0 | 86.4 |
| Population growth (%/yr) | -0.56% | 0.05% | 0.59% |
| Median age | 37.7 | 38.7 | 37.3 |
| Households | 39,370 | 7,694,043 | 130,235,071 |
Population in St. Lawrence County declined by 3.8% from 2009 to 2024, reaching 100,889 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in St. Lawrence County is Gen Z, aged 13–28, at 24.6% of residents. That is 4.1 points above New York as a whole.
- Gen Z 13–28 24,817 24.6% +4.1 pts
- Millennials 29–44 18,904 18.7% -3.5 pts
- Gen X 45–60 20,561 20.4% -0.4 pts
- Boomers 61–79 18,470 18.3% +0.9 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below New York, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 48.8% of the people living in St. Lawrence County and men 51.2%.
- Women 48.8% New York 51.3%
- Men 51.2% New York 48.7%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in St. Lawrence County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
St. Lawrence County has a the economy index of D, which means it is barely prosperous.
| Metric | St. Lawrence County | New York Avg | U.S. Average |
|---|---|---|---|
| Median household income | $62,697 | $86,556 | $80,455 |
| Income growth (%/yr) | 3.96% | 4.51% | 4.80% |
| Unemployment rate | 5.3% | 6.4% | 5.2% |
The median household income in St. Lawrence County is about 28% lower than in New York.
Housing
| Metric | St. Lawrence County | New York Avg | U.S. Average |
|---|---|---|---|
| Median home price | $95,915 | $471,885 | $248,835 |
| Median rent | $817 | $1,621 | $1,407 |
| Homeownership rate | 71.9% | 54.3% | 65.2% |
The median home price in St. Lawrence County is about 9.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $817 per month for that long.
Commute Time & Mobility
Commuters in St. Lawrence County spend about 34 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 141 hours, about 5.9 full days, spent commuting.
| Metric | St. Lawrence County | New York Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 16.9 | 28.7 | 22.4 |
| Round-trip commute (min) | 33.9 | 57.4 | 44.8 |
| Yearly time spent (hours) | 141 | 239 | 187 |
| Estimated yearly cost | $4,376 | $7,414 | $5,790 |
| Work from home | 6.9% | 15.0% | 15.0% |
| Highway traffic (vehicles/day) | 1,340 | 9,257 | 8,813 |
| Local road traffic (vehicles/day) | 440 | 1,586 | 1,355 |
Fastest commutes among counties in
New York:
Hamilton County (13.6 min), Chautauqua County (15.4 min), Franklin County (16.4 min).
Slowest:
Bronx County (43.2 min), Queens County (41.8 min), Kings County (41.6 min).
The average commute time in St. Lawrence County is 17 minutes, shorter than the 29 minutes in New York.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
St. Lawrence County has a education index of D, which means it is barely educated.
| Metric | St. Lawrence County | New York Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 20.2% | 36.5% | 31.6% |
| Average household size | 2.29 | 2.49 | 2.53 |
Highest education index among counties in
New York:
New York County (0.5), Tompkins County (0.4), Westchester County (0.4).
Lowest:
Bronx County (0.2), Orleans County (0.2), Hamilton County (0.2).
Health
St. Lawrence County has a health index of B, which means it is quite healthy.
| Metric | St. Lawrence County | New York Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 80.7 | 80.3 | 78.3 |
| Self-rated poor health | 14.7% | 13.2% | 16.3% |
| Smokers | 20.9% | 17.4% | 19.0% |
Highest health index among counties in
New York:
Tompkins County (0.8), Nassau County (0.8), New York County (0.8).
Lowest:
Bronx County (0.8), Montgomery County (0.8), Cattaraugus County (0.8).
St. Lawrence County, NY Compared With Nearby Counties
St. Lawrence County, NY is the 2nd largest of the 5 counties compared here, 100,889 residents against a local median of 52,563. St. Lawrence County, NY sits close to the middle of its own neighbourhood. No measure below is more than 15% off the local median, so the choice between these counties turns on things this data does not capture.
The largest of those small differences is median home price, 12% below the local median at $95,915 against $108,528. St. Lawrence County, NY has the 4th highest median home price of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| St. Lawrence County, NY | 100,889 | $62,697 #5/5 | $95,915 #4/5 | 16.9 min #3/5 |
| Franklin County, NY | 46,696 | $65,925 | $96,666 | 16.4 min |
| Lewis County, NY | 26,603 | $68,475 | $120,390 | 18.4 min |
| Herkimer County, NY | 58,430 | $67,728 | $63,440 | 21.7 min |
| Jefferson County, NY | 115,039 | $66,905 | $142,083 | 16.7 min |
Frequently Asked Questions
Common questions about St. Lawrence County, New York.
How many people live in St. Lawrence County, New York?
About 100,889 people live in St. Lawrence County, New York, in 39,370 households of 2.3 people on average. The median age is 37.7, close to the U.S. median of 37.3.
How densely populated is St. Lawrence County, New York?
Averaged over its land area, St. Lawrence County, New York has 36 people per square mile, a density typical of rural areas. That is about 41% of the U.S. average of 86.
Is St. Lawrence County, New York an affordable place to live?
The median home costs 1.5 times the median household income ($95,915 against $62,697), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $817 a month takes about 16% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How educated are people in St. Lawrence County, New York?
20.2% of adults in St. Lawrence County, New York hold a bachelor's degree or higher (about 1 in 5), well below the U.S. share of 31.6%.
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